<template>
  <div class="login_container">
    <div class="login_box">
        <!-- 头像区域 -->
      <div class="avatar_box">
        <img src="../assets/logo.png" alt="" />
      </div>
      <!-- 登录表单区域 -->
      <el-form ref="loginFormRef" :model="loginForm" :rules="loginFormRules"  label-width="0px" class="login_from">
          <!-- 用户名 -->
         <el-form-item prop="username">
            <el-input v-model="loginForm.username" prefix-icon="iconfont icon-user"></el-input>
         </el-form-item>
         <!-- 密码 -->
         <el-form-item prop="password">
            <el-input v-model="loginForm.password" prefix-icon="iconfont icon-3702mima" type="password"></el-input>
         </el-form-item>
         <!-- 按钮区域 -->
         <el-form-item class="btns">
            <el-button type="primary" @click="login">登录</el-button>
            <el-button type="info" @click="resetLoginForm">重置</el-button>
         </el-form-item>

      </el-form>
    </div>
  </div>
</template>

<script>
export default {
    data () {
        return {
            // 这是登录表单的数据绑定对象
            loginForm: {
                username:'admin',
                password:'123456'
            },
            // 这是表单的验证规则对象
            loginFormRules:{
                // 验证用户名是否合法
                username: [
                    { required: true, message: '请输入登录名称', trigger: 'blur' },
                    { min: 3, max: 10, message: '长度在 3 到 10 个字符', trigger: 'blur' }
                ],
                // 验证密码是否合法
                password: [
                    { required: true, message: '请输入登录密码', trigger: 'blur' },
                    { min: 6, max: 15, message: '长度在 6 到 15 个字符', trigger: 'blur' }
                ]
            }
        }
    },
    methods: {
        //点击重置按钮.重置登录表单
        resetLoginForm () {
            this.$refs.loginFormRef.resetFields();
        },
        login () {
            this.$refs.loginFormRef.validate(async valid => {
            if (!valid) return
            const { data: res } = await this.$http.post('login', this.loginForm);
            if(res.meta.status !==200) return this.$message.error('登录失败')
            this.$message.success('登录成功')
            window.sessionStorage.setItem("token", res.data.token);
            this.$router.push("/home");
          })
        }
    }
};
</script>

<style Lang="less"  scoped>
.login_container {
  background-color: #2b4b6b;
  height: 100%;
}

.login_box {
  width: 450px;
  height: 300px;
  background-color: #fff;
  border-radius: 3px;
  position: absolute;
  left: 50%;
  top: 50%;
  transform: translate(-50%, -50%);
}
.avatar_box {
  position: absolute;
  left: 33%;
  top: -25%;
  height: 130px;
  width: 130px;
  border: 1px solid #eee;
  border-radius: 50%;
  overflow: hidden;
  padding: 10px;
  box-shadow: 0 0 10px #ddd;
  background-color: #fff;
}

.avatar_box img {
  width: 100%;
  height: 100%;
  background-color: #eee;
  border-radius: 50%;
}

.login_from { 
    position: absolute;
    bottom: 0;
    width: 100%;
    padding: 0 20px;
    box-sizing: border-box;
}

.btns {
    display: flex;
    justify-content: flex-end;
}


</style>